Mtjlticolored-ribbdikr shift foe typewriters



-M. GARBELL. MULTICOLORED RIBBON SHIFT FOR TYPEWRITERS.

PatentedSept. 19, 1922.

2 SHEETS-SHEET I- APPLICATION FILED JAN. 19, I920.

M. GARBELL;

MULTICOLORED RIBBON SHIFT FOR TYPEWRITERS- APPLICATION FILED JAN. I9, 1920. 1,429,678. PatenwiSept 19, 1922.

swans-safer 2.

Patented Sept. 19, 1922.

- 1,429,678 PATENT OFFICE.

ivrAx GARBELL, orcHroAGo, ILLINOIS.

MULTICOLORED- RIBBON SHIFT FOR TYPEWRITERS.

Application filed January 19, 1920 Serial No. 352,514.

I To all whom it may concern:

Be it knowngthat. I, MAX GARBELIZ, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in a llulticolored-Ribbon Shift for Typewriters, of which the following is a specification.

This invention relates to improvements in a ribbon shifting mechanism for typewriting machine of that type of such machines in which reciprocating type bars are employed, and in that kind of ribbon shifting mechanism used forshiftinga plural or bicolored ribbon so that the proper colored portion thereof may be correctly positioned between-the typed ends ofthe type carrying bars andplatenj o'fthe machine, to produce impressions of the desired coloron the paper being used, and ,it consists in certain .peculiaritiesof the construction, novel ar-- rangement, combination and operation of the various parts thereof'as will be hereinafter more fully set-forth and-specifically claimed. H i 1 Y One of the objects of the invention is to provide a ribbon shifting mechanism which shall be so constructed, arrangedand operatively connected to the carriage supporting frame of the typewriting machine as to be carriedthereby and therewith in ts movements, to-the end, that when the carriage is shifted, the ,nibbon will be positioned and so'held as to cause one of the colors to be typed, untilitis shiftedor;set? independently of the movement thecarriage.

Another and important object is to pro vide the mechanism with ribbon holding means of such construct on, arrangement and operation of its parts, as to limitits movement in opposite dlrectlons, or, forwardly and rearwardly, thereby, preventing the ribbon holding means or fingers striking or contacting with the paper on the platen and thus causing carbon marks.

, A further object "is, to furnishla device of the above named general character, which shall be simple and inexpensive in construe-o tion, reliable and'eflieientin action, strong Other objects {and advantages of the invention will be disclosed] in thefollowing explanation and. description.

In the accompanying drawings, which serve to illustrate embodiment of the' n showing my improvements mounted on the carriage frame and by continuous lines the positlon the 'parts'of the mechanism will Q occupy, with one of the colored portions of theribbon positiored for use, and by dotted lines the position of the parts when the other colored portion of the ribbon is so positioned. f v

F 2 is a fragmental sectional View taken on line 2-2 ofFig. 4 looking in the direction indicated by'the arrows.

Fig. 3 is a plan View taken on line 33 as indicated by arrows-in Fig. 1.

Fig. 4 is a fragmental face View of a portion of the carriage frame showing the ribbon shifting mechanism mounted thereon and illustrating a fragment of a two-colored ribbon held thereby.

Fig. 5 is an end-elevation of portions of the carriage frame, and

Fig. 6 is a cross-sectional view thereof taken on line 6, 6"of Fig. 4 looking in the direction indicated by the arrows.

Corresponding numerals of reference designate similar parts througho at the different views of the drawings.

The reference vnumeral 1O designates one ofthe end pieces or plates of-the carriage of the machine which may be connected to the other plate thereof between which the platen 11 is journaled by means of a rod 12 and shafts13 and l lyand also by means of. carriage rails 1 5 which are mounted on anti-friction ball bearings 16 supported by the carriage rail supports 17 in the usual or well-known way. These supports are mounted on the upper portion of end pieces 18 of the carriage supporting frame and in parallelism with the rails 15 but below the same so as to provide races or tracks for 'tlieball bearings 16 on which the rails 15 rest. Each of the end pieces 18 is provided .on its 'rear portion with rearwardly extended. arms 19 located one above the other and each of said arms has journaled thereon side walls of said frame. being shown by dotted lines in-Fig. l' o'ftjhe drawings. c

At. least one ofthe end pieces 18 ofthe I carriage supporting frame has pivotally connected thereto one end of a lever 23 which is suitably fulcrumed on the main frame and is used for vertically shifting the position of the carriage supporting frame, as well as, the carriage thereon. That end of the lever 23 attached to the end piece 18 is provided with an elongated opening 24 through which is extended a pin 25, which arrangement will permit of the proper movements of said lever and frame, as is obvious.

Extended forwardly, and by preference, horizontally from the lower portion of the front support 17, are a pair of apertured brackets 26, one of which is located near one end of the said support or bar 17 and the other at a suitable distance therefrom. Journaled at one of its ends on one of the brackets 26 is rock-bar 27, the other end of which is mounted for rotation on the end of an adjusting screw 28 located in the opening of the bracket 26 near the end of the support .17 as is clearly shown in Figs. and 4, of the drawings. The bar 27 has near its outer end a shifting or operating handle or lever 29 and near its other end pair of spaced apart arms 30, all of which extend for wardly, and normally in a downward direction. Each of the arms 30 has on its outer portion an apertured ear S1, to each of which is pivotally secured the lower end of a ribbon holder or finger, each designated as a whole by the numeral 32. Extend ed forwardly and horizontally from the upper portion of the front support 17 outwardly of or near the fingers 32' is a pair of arms 33 each of which has an inward extension 34 to co-act with the fingers 32 to restrict their movements in opposite directions.

As is clearly shown in Figs. 1 and 2, each of the fingers 32 is provided at its lower portion with a rearwardly extended loop 35 which provides a vertically elongated opening 36, in which one of the extensions 34 is located, which arrangement will per mit of free vertical movement of the fingers, but as the extensions 34 will contact with the w 11s of said openings therein, their back and forth movements will be restricted. The upper portion of each of the fingers 32 provided with a vertically and transversely disposed ribbon receiving slot 3'7 in which the ribbon 38 of a plural or two color type, for example, of black 89 and red 40 sections, see Fig. 4, may be readily placed through an opening 41 leading to each of said slots and thereby properly held and guided between the type carrying bars and platen.

The handle 29, which is by preference integral with the rock-bar 27 is provided with a downwardly extended flange 42, see

Figs. 3 to 6, which has in its lower edge a plurality of recesses 43 for alternate engagement with a ball 44 supported or pressed by a spring 45 mounted on the front supports or rails 17 and extended forwardly therefrom. The front lower portion of each of the fingers 32 has afiixed thereto one end of a spring 46 which is extended around the pivot on which its finger is mounted and connected at its other end to the arm 30 adjacent thereto, thus holding said fingers in their normal positions as shown by con tinuous lines in Figs. 1 and 2 of the drawings.

Suitably mounted in front of the platen 11 is the base 47 of the frame or support of the reciprocating bars 48, each of which has mounted on an upright member 49 thereof, type 50, 51 and 52, which are arranged one above the other as shown, and usually with the small letters or type in the lowermost position, the figures or characters 52 in the uppermost position and the capital letters or type: 51 in an intervening position. These bars may be reciprocated' in the ordinary or any well known way. The base 4'? has on its rear portion upright standards 53 which carry at their upper ends a rearwardl-y directed guide 54 for the members 49- and rearwardly of said upright an extension 55 which is provided with a guide 56 for the lower portions of the bars 48 or members 49' thereof to direct the type on said bars" to a unitary or common striking point on the platen.

From the above it will be understood that the guides 54 and 56 are located between but rear vardly of the standards 53 of the typebar carrying frame.

Assuming that the parts are in the positions shown by full lines in Fig: 1, it will be understood that the ribbon 38 will beheld substantially taut and in position for the colored section 3-9 thereof "to be struck by the type 50, which operation will cause the ribbon and its fingers to be deflected rearwardly to about the position shown'by dotted lines in Fig. 2, for each stroke of the type bars, the springs 46 yielding sufficiently for this purpose, but exerting their tension, when the ribbon is freed", againstthe fingers so as to restore to and hold them in their normal positions. In the above mentioned rearward movement of the fingers it is manifest that the extensions 34 on the arms 33 will contact with the front walls of the openings 36 of the fingers thus preventing the latter striking the paper on the platen which would cause carbon marks thereon when carbon paper is used.

If it is desired to write with the small type or letters 50 in another color, the ribbon holders or fingers can be shifted or moved upwardly by raising the lever 29 to about the positions of said parts shown by dotted lines in Fig. 1 of the drawings,when it is obvious that the colored section 40 of and means engaging the rock bar to retain it- .the carriagev and the ribbon shifting and holding mechanism will be moved atthe same time, but that the ribbon may be shifted independently of the movement of the carriage and its supporting frame.

Having thus fully described my invention, what I claim as new and desire tosecure by Letters Patent is- 1. In a mechanism of the class described, the combination with a carriage-supporting frame mounted for Vertical movement; of a platen-carrying, carriagemounted on said frame; a rock barjournaled on the front portion of said supporting frame and having a pair of spaced-apart forwardly extend ing arms and near one of its ends an operating lever; a pair of spaced-apart springactuated ribbon-holding members pivotally mounted on said arms and extended in front of the platen,.each of said members having in its lower portionan elongated opening; a pair of arms extended forwardly from the up er portion of said supporting frameand eaci having a lateral extension located in the opening of the ribbon-holding member;

in a given position. I I

2. A machine'of the class described including, in combination: a carriage-supporting frame mounted for vertical movement; a rock bar journaled on the front portion of said frame and having a pair of spacedapart forwardly extending arms and near one of its endsan operating'lever, said lever having a recessed flange extending there from; a spring mounted on said supporting frame and extended near the recessed por-'' tion of said flange; a ball located between said spring and the recessedportion of said flange; a pair of spaced-apartribbon-holding members pivotally mounted on said members and extended upwardly therefrom;

springs, each attached at one of its ends to the lower front portion of one of said members and extended around the'pivot thereof and applied at its other end to one of saidarms; and a pair of arms extended for wardly from the upper portion of said supporting frame and cooperating with said members to restrict the rearward movement of said members.

3. In a multi-colored ribbon shift for typewriters having a carriage-supporting "frame adapted for vertical movement and a platen carriage mounted on said frame, the combination with ribbon-holding and guidring means extended in front of the platen and oscillatably mountedon the carriagesupportlng frame to swing about an axis parallel to the platen toward and from the latter; of resilient means supported entirely from said frame for yieldingly resisting movement of sa1d ribbon-holding means to- ,ward the platen and for automatically re storing said holding means to normal position after a printing operation; and manually operable means mounted on said. frame and cooperable with the ribbon-holding means for adjusting the latter vertically relatively to the frame to thereby bring different portions of the ribbon into operative position for printing.

'a. In a multi-colored ribbon shift for typewriters having a carriage-supporting frame arranged for vertical movement and a platen carriage on the frame, the combination with transversely spaced ribbonholding and guiding members extended in front of the platen; of a shaft supported from said frame and extending parallel to the platen and upon which said members are pivotally mounted; means for adjusting the angular position of said shaft to thereby vary the vertical position of the ribbon-holding members with respect to theframe and the platen; means rigid with said frame and cooperable with said members to limit the pivotal movements of the latter toward and from the platen; and means for restoring said ribbon-holding members automatically to normal position after each printing operation.

5. In a -multi-colored ribbon shift for typewriters having a carriage-supporting frame arranged for vertical movement and a platen carriage on the frame, the combination with a rock shaft mounted on said frame and extending parallel to the platen, said shafthaving forwardly extended arms; of

ribbon-holding members to limit the amount of pivotal movement thereof with respect to the arms of said rock shaft.

MAX GARBELL. 

